Door-check.



Patented Aug. l5, |899.

C. F. HANINGTDN.

D 0 0 R C H E C K (Application led Oct. 28, 1898. Renewed July 2l, 1899.)

UNITED STATES PATENT EEICE.

CHARLES F. HANINGTON, OF NEW YORK, N. Y., ASSIGNOR TO THE MECHAN- ICAL DOOR HINGE CHECK COMPANY, OF SAME PLACE.

DOOR-CHECK.

SPECIFICATION forming part of Letters Patent No. 631,074, dated August 15, 189'9.

Application filed October 28, 1898. Renewed July 21, 1899- Serial No. 724,723. (No model.)

To all whom t may concern:

Be it known that I, CHARLES F. HANING- TON, a citizen of the United States, residing in the borough of Manhattan, city, county, and State of New York, have invented certain new and useful Improvements in Mechanical Door-Checks, of which the following is a speciiication.

My invention relates to new and useful improvements in mechanical door-checks, and the type of such devices to which the invention particularly relates is th at shown and described in myPatentNo. 601,830, dated April 5, 1898. In the door-checks referred to the elements are carried within and upon a suit-` able hinge. One of the hinge-leaves carries a checking-pawl and the other a shoulder adapted to engage said pawl to check the closing movement of the door at the proper time, a checking-spring being employed to relieve the engaging parts of any impact or blow created by their engagement. The said checking-spring may coperate either with the shoulder or with the checking-pawl. In the patent referred to I show the checkingspring as coperating with the said shoulder, whereby when the pawl engages said shoulder the latter will move against the tension of said spring; but it is possible to providea rigid shoulder and to arrange the checkingspring in connection with the pawl, whereby when the pawl engages the shoulder to check the door it will be moved against the tension of said spring. In an application for Letters Patent filed October 19, 1898, and numbered serially 693,980 I describe an improved door-check employing this latter arrangement. With the device shown in said patent and also with the device described in said application a locking-dog is provided which normally holds the checking-pawl in a position to engage with or be engaged by the said shoulder, the said locking-dog being so arranged as to be tripped by the engagement between the pawl and shoulder, so as to release the pawl. On the rebound, however,

the pawl will be moved out of the line of the shoulder by means of an operating-spring, whereby the two hinge-leaves may be brought together and the door closed. On opening the door the pawl will be moved again into position to be engaged by or to engage with the shoulder and the locking-dog will be reset to lock the pawl in that position.

In my present improvements I provide an improved door-check operating in connection with a hinge and of the same general type as that to which I have referred. In the present device the checking-pawl is carried by one of the leaves, preferably by the stationary leaf, and the shoulder which engages said pawl to check the door is preferably carried by and within the barrel on the other leaf. The checking-pawl is so mounted on its leaf as to be movable toward and away from the barrel and the shoulder instead of being movable lengthwise of the barrel to be carried above the shoulder on the rebound. The checking-pawl may and ,preferably does slide relatively to its leaf, so as to bemoved out of the path of the shoulder, although the said pawl may be pivoted to said leaf, so as to partake of this movement. The checking-sprin g preferably cooperates with the checkin g-pawl, in which case a leaf-spring will be used, secured to the hinge-leaf and with which the checking-pawl will be always in engagement. A spring is used, tending to normally throw the checking-pawl toward the hinge-barrel, so as to enter the barrel with its ends arranged in the path of movement of the shoulder, the barrel being cut away to accommodate the end of the checking-pawl, as will be explained. Carried adjacent to the shoulder, either above or below the same or within a kerf formed in the shoulder, is a resetting-pawl operated by a spring of greater tension than the operatingspring of the pawl. This resetting-pawl is provided on its outer edge with a cam-surface adapted to engage the inner end of the checking-pawl or in a shallow slot formed in said end, by reason of which engagement the said resetting-pawl will be retracted and its spring placed under tension when the checking action takes place. The resetting-pawl will be prevented from moving the checkingpawl out of the path of movement of the shoulder by reason of the locking-dog, which locks the checking-pawl in its operative position. As soon as the shoulder engages the checking-pawl it will trip the lockingdog thereof; but the said checking-pawl will not IOO be forced out of its normal position in the therewith.

path of movement of said shoulder because of the friction between the shoulder and pawl. When the door has rebounded, however, to relieve the friction between these elements the resetting-pawl will be returned by its spring, moving the checking-pawl out of the path of movement of the shoulder and allowing the shoulder to pass beneath the same, whereby the door may close. Upon opening the door the cam-head of the resetting-pawl will be almost immediately withdrawn from beneath the checking-pawl, whereby the operating-spring of said pawl will return the saine to its normal position in the path of movement of-said shoulder, and it will be locked in that position by the locking-pawl, ready for repetition of the operation. In this way I obtain a device which is very simple in construction, effective in operation, having but few parts, and wherein the elements will be reset almost immediately after the door has commenced to be opened.

In order that my invention may be better understood, attention is directed to the accompanying drawings, forming part of this specification, and in which- Figure 1 is a side elevation, partly in seetion, of a hinge provided with my improved checking device, the elements of the hinge being illustrated in the closed position; Fig. 2, a section through the checking-pawl and resetting-pawl, illustrating the parts in the position which they-occupy during the checking operation; Fig. 3, asimilar view illustrating the hinge-leaves in the closed position; Fig. 4, a similar View illustrating the hingeleaves separated to the extent of ninety degrees; Fig. 5, a detail side elevation with the parts in the positions shown in Fig. 3, and Fig. 6 an elevation illustrating the latch for the checking-pawl.

In all of the above views corresponding parts are represented by the same numerals of reference.

1 represents a leaf secured to a barrel 2, and 3 is a second leaf, both leaves beingpivotally mounted on a pintle 4. Ordinarily the leaf 3 is secured to the door-casing and is therefore stationary, and the leaf 1 is secured to the door and is therefore movable with the barrel. The stationary leaf 3 is provided with a recess 5 therein, in which is mounted a checking-pawl 6. This pawl is preferably mounted to slide within said recess. 7 represents the checking-spring, which preferably cooperates directly with the pawl, and this is preferably a leaf-spring secured to the leaf 3 by screws S S, substantially as I have illustrated and described in my said application referred to. The checking-pawl Gis normally projected within the barrel 2 and works in a slot 9 therein, as shown. A spring 10 coperates with the pawl (i and tends to normally force its inner end within the barrel. Mounted within the barrel 2 is a collar 11, which is secured to the barrel by screws 12, so as to move This collar is provided with a shoulder 13, adapted to engage with the pawl G to check the door at the proper point. A resetting-pawl 14 is pivoted to the collar 11 and movable therewith to operate with the checking-pawl, and surrounding the pivot 14 thereof is a coiled spring 15, normally forcing the lever outward and of greater tension than the spring 10. The said resetting-pawl 14 is provided with a collar 142, carried on the pivot 14', the body or main portion of said pawl being located in a plane below that of said collar and working in a kerf or groove 143, cut in the face of the shoulder 13. On the outer edge of the resetting-pawl 14 is a cam-surface 1G, adapted to engage the end of the checking-pawl G when the checking operation takes place and by which engagement the resetting-pawl 14 will be moved inward, placing the spring 15 under tension. In order to lock the checking-pawl G in its normal position in the path of movement of the shoulder 13, I provide aspring-pressedlocking-dog 17, preferably carried on the under side of said pawl on a pivot 18. This locking-dog is provided with a projection 1D, arranged to be e11- gaged by the shoulder 13 when the checking operation takes place, and with a linger 2O engaging a recess 21 in the checking-spring 7. IVhen it is desired to dispense with the cheeking operation, the checking-pawl 6 may be withdrawn and lockedin a retracted position out of the path of movement of the shoulder 13 in any suitable way.

As an illustration, I have shown a latch 22, carried by the shield 23, which is secured to the leaf and encircles the barrel to close the slot 9. Said latch is adapted to engage a stud 24 on the checking-pawl 6 when the latter has been moved back against the tension of its spring 10, the stud 24 working in a slot 25 in the shield 23. In order that correct operation may be secured, the spring 15 of the resetting-pawl 14 is of greater tension than the spring l0, whereby when the locking-dog 17 is disengaged from the recess 21 to free the checking-pawl the resetting-pawl will move the checking-pawl on its pivot 7 out of the barrel 2 to withdraw it from its position in the path of movement of the shoulder 13 and to allow the shoulder to pass beneath the checking-pawl, whereby the two hingeleaves may be brought together to close the door.

The operation of my improved device will be as follows: When the door is open, the shoulder 13 and the cam-shaped forward end of the resetting-pawl 14 will be withdrawn entirely clear of the checking-pawl. The spring 10 will therefore move the checking-pawl toward the barrel 2 and its inner end will enter the said barrel to be thus located in the path of movement of the shoulder 13. The locking-dog 17 will therefore lock the checking-pawl in this position by the engagement between the nger 2O and the recess 21, a small spring 26 being used to automatically move the locking-dog into its locking position. When the door is closed either by hand or by the effect of a suitable spring, the shoulder 13 and the cam-shaped outer edge .of the resetting-pawl 14 will be moved toward the checking-pawl. The cam 16 of the resetting-'pawl 14 willfirst engage the end of said checkin g-pawl; but since the latter will be locked against movement the said resetting-pawl will be moved inward and its spring will be placed under tension, as. shown in Fig. 2, the collar 142 working above and out of line with the pawl 6. The shoulder 13 will then immediately engage the checking-pawl, first striking the projection 19 to release the locking-dog; but the friction between thesaid shoulder and pawl will prevent the latter from being forced outward by the resetting-pawl. This engagement will provide an effective checking operation, since the pawl 6 will be moved slightly with respect to the checking-sprin g 7 ,on which all shocks of impact will be received. When the door has rebounded to relieve the friction between the shoulder 13 and the checking-pawl, the resetting-pawl 14 will force the checking-pawl outward against the tension of the spring 10, and the checking-pawl will therefore be removed from the path of engagement of the shoulder 13, whereby when the rebound has ended the door may close, the shoulder 13 moving clear of the checkingpawl. When the door is opened, the shoulder 13 and the cam-shaped edge of the resetting-pawl 14 will be moved from out of engagement with the checking-pawl, and the spring 10 will movesaid pawl into its former position in the path of movement of the shoulder 13, ready torepeat the checking operation. If for any reason it is desired that the checking action should not take place, the checkingpawl 6 is moved backward against the spring 10 and may be locked in its retracted position-as, for example, by the latch 22.

Having thus described my invention, what l claim as new, and desire to secure by Letters Patent, is as follows:

1. In a door-check, the combination witl the two leaves of a hinge, one of which carries abarrel, a checking-pawl on one of said leaves movable toward and away from the axis of said barrel, and a shoulder movable with the other leaf and adapted to engage the checking-pawl, substantially as set forth.

2. In a door-check, the combination with the two leaves of a hinge, one of which carries a barrel, a checkin g-pawl on one of said leaves movable toward and away from the axis of said barrel, a shoulder movable with the other -leaf and adapted to engage the checkingpawl, and a checking-sprin g for receiving the impact of engagement between the shoulder and pawl, substantially as set forth.

3. In a door-check, the combination with the two leaves of ahinge, one of which carries a barrel, a checkin g-pawl on one of said leaves movable toward and away from the axis of said barrel, a shoulder movable with the other leaf and adapted to engage the checkingpawl, and means for moving the checkingpawl away from the axis of the barrel on the rebound whereby said shoulder may pass clear of said pawl to allow the door to close,

away from the axis of the barrel on the rebound whereby said shoulder may pass clear of said pawl to allow the door to close, and means for resetting said pawl on the opening of the door, substantially as set forth.

5. lIn a door-check, the combination with the two leaves of a hinge, one of which carries a barrel, a checking-pawl mounted on one of said leaves and movable toward and away from the axis of said barrel, a shoulder movable with the other leaf and adapted to engage said pawl, means for locking said pawl in a position to be engaged by said shoulder, the locking means being disengaged to free the pawl when the shoulder is brought into contact therewith, and means for moving the pawl away from the axis of the barrel on the rebound to allow the shoulder to pass clear of the same, substantially as set forth.

6. In a door-check, the combination with the two leaves of a hinge, one of which carries a barrel,'a checking-pawl mounted on one of said leaves and movable toward and away from the axis of said barrel, a shoulder movable with the other leaf and adapted to engage said pawl, means for locking said pawl in a position to be engaged by said shoulder, the locking means being disengaged to free the pawl when the shoulder is brought into contact therewith, means for moving the pawl away from the axis of the barrel on the rebound to allow the shoulder to pass clear of the same, and a resetting-pawl movable with said shoulder for engaging the checking-pawl and moving the same away from the axis of IOO IIO

the barrel on the rebound, substantially as set forth.

'7. In a door-check, the combination with the two leaves of a hinge, one ofwhich carries a barrel, a checking-pawl mounted on one of said leaves and movable toward and away from the axis of said barrel, a shoulder movable with the other leaf and adapted to engage said pawl, means for locking said pawl in a position to'be engaged by said shoulder, the locking means being disengaged to free the pawl when the shoulder is brought into contact therewith, means for moving the pawl away from the axis of the barrel on the rebound to allow the shoulder to' pass clear of the same, a resetting-pawl movable with said shoulder for engaging the checking-pawl and moving the same away from the axis of the barrel on the rebound, and alocking-dog car- Izov ried by said checking-pawl and adapted to be engaged by said shoulder to release the cheeking-pawl, substantially as set forth.

S. In a door-check, the combination with the two leaves of a hinge, one of which earries a barrel, a checking-paw] mounted on one of said leaves and movable toward and away from the axis of said barrel, a shoulder movable with the other leaf and adapted to engage said pawl, means for locking said pawl 'in a position to be engaged by said shoulder, the locking means being disengaged to free the pawl when the shoulder is brought into Contact therewith, means for moving the pawl away from the axis of the barrel on the rebound to allow the shoulder to pass clear of the same, a resetting-pawl movable with said shoulder for engaging the cheeking-pawl and moving the saine away from the axis of the barrel on the rebound, and means for locking said eheeking-'pawl in a retracted position, substantially as set forth.

9. In a door-cheek, the combination with the two leaves of a hinge, one of which earries a barrel, a checking-pawl mounted on one of said leaves and movable toward and away from the axis of said barrel, a shoulder movable with the other leaf and adapted to engage said pawl, means for looking said pawl in a position to be engaged by said shoulder, the looking means being disengaged to free the pawl when the shoulder is brought into Contact therewith, means for moving the pawl away from the axis of the barrel on the rebound to allow the shoulder to pass Clear of the same, a resetting-pawl movable with said shoulder for engaging the eheeking-pawl and moving the same away from the axis of the barrel on the rebound, and a latch for locking said eheeking-pawl in .a retracted position, substantially as set forth.

This specification signed and witnessed this 6th day of October, 1898.

CHARLES F. HANINGT'ON.

Vitn esses:

JNO. R. TAYLOR, ARGIIIE G. Rnnsn. 

